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Questions and Answers
Hydrogen is the heaviest element known till date.
Hydrogen is the heaviest element known till date.
False
When hydrogen burns, a pale blue flame and a pop sound are heard.
When hydrogen burns, a pale blue flame and a pop sound are heard.
True
Hydrogen is highly soluble in water.
Hydrogen is highly soluble in water.
False
Sodium is at the top of the reactivity series, giving hydrogen with water.
Sodium is at the top of the reactivity series, giving hydrogen with water.
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Hydrogen reacts with metal oxides to form metal and oxygen.
Hydrogen reacts with metal oxides to form metal and oxygen.
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Oxidation involves the removal of hydrogen and the addition of oxygen.
Oxidation involves the removal of hydrogen and the addition of oxygen.
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Hydrogen molecule is monovalent.
Hydrogen molecule is monovalent.
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Nitric acid can be used to prepare hydrogen by its action on active metals.
Nitric acid can be used to prepare hydrogen by its action on active metals.
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Zinc can liberate hydrogen from water, acid and alkali solution.
Zinc can liberate hydrogen from water, acid and alkali solution.
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Hydrogen is combustible as well as a supporter of combustion.
Hydrogen is combustible as well as a supporter of combustion.
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Hydrogen gas is easily liquefiable.
Hydrogen gas is easily liquefiable.
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The removal of hydrogen from a substance is called reduction.
The removal of hydrogen from a substance is called reduction.
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